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Finding the Fourth Proportional to 129,875.64, 194,656.70 and 63,215.88

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Solution

The fourth proportional to 129,875.64, 194,656.70 and 63,215.88 is: 94,747.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,875.64 : 194,656.70 = 63,215.88 : x
  2. Step 2: Convert to fraction form
    129,875.64/194,656.70 = 63,215.88/x
  3. Step 3: Cross multiply
    129,875.64x = 194,656.70 × 63,215.88
  4. Step 4: Simplify right side
    129,875.64x = 12,305,394,588.40
  5. Step 5: Solve for x
    x = 12,305,394,588.40/129,875.64
  6. Step 6: Final answer
    x = 94,747.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.